[Paraview] Adding custom buttons on Toolbar

[Magician]

Hi all,


I'm planning to add custom tools for ParaView.
My first plan is:
 - Add a button (with graphical icon) on Toolbars' space.
 - The function is changing camera's position, focal point and reset zoom.

I'm not so familiar with developing plugins.
Are there any informations or sample codes to do it?

# I tried "Add new macro" with a Python script of camera motion,
# but the insufficiency is the button's appearance.


Magician